Question

A tennis ball of mass 53.0 g is held just
above a basketball of mass602 g. With their centers
verticallyaligned, both are released from rest at the same moment,
to fallthrough a distance of 1.04 m, as shownin the figure
below.

(a) Find themagnitude
of the downward velocity with which the basketballreaches the
ground. Assume an elastic collision with the groundinstantaneously
reverses the velocity of the basketball while thetennis ball is
still moving down.
m/s

(b) Next, the two balls meet in an elastic collision. To whatheight
does the tennis ball rebound?
m